By spending just a few hours per month, Chloe earns through Google AdSense between $20 and $30 per day -- and it's sometimes even as much $40. If you do the math, that's somewhere around $700 to $900 a month for very little work. If Chloe wanted to earn a similar amount of money through a part-time job -- at her age, this typically means flipping burgers, babysitting or operating a paper route -- she'd have to work somewhere around 25 to 30 hours per week (assuming minimum wage). "

--CNET SEO columnist Stephan Spencer, describing his teenage daughter's ventures into profitable SEO.